Symptoms
The Microsoft ADO.NET Provider for DB2 doesn't process client connections correctly. This issue may occur when the client connection is loaded by a multithreaded consumer. In this case, the multithreaded application may hang.
Resolution
This issue is fixed in Cumulative Update 2 for Host Integration Server 2016.
Status
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
References
Learn about the terminology Microsoft uses to describe software updates.